Lamp.



PATENTBD FEB. l2, 1907.

C. B. BROUGHTON.

LAMP.

APPLIUATION FILED FBB.13. 190e.

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LAMP.

Specification of Letters atent.

atented Feb. 12, 1907.

Application filed February 13,1906. Serial No. 300.855.

Be it known that I, Ci-iAnLEs B. BROUGH- rou, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful improvement in Lamps, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to lamps, and particularly to that class of lamps from which the flow of light is restricted to definite p athsfas, for example, search-lights.

My invention finds particular utility in connection with automobile-lamps, though the invention is not to be restricted to this use.

The invention has for its general object the provision of improved mechanism whereby a lamp may readily be adjusted in position and have such adjustment made secure.

.In accordance with the preferred embodiment of my invention lamp that is journaled tal plane, a rack that is concentric with the axis of rotation of said. base, a handle carried by the base, and a lockinglog carried by the handle serving to engage the rack to hold the "f handle and the base carrying the same in any osition to which they may While in automobile ractice l prefer to secure the handle to the amp structure, I do not wish to be limited to a construction in which the handle moves with the lamp structure.

By the term rack as used herein l mean any suitable form of locking member with the different portions of which a locking-dog may be engaged. I prefer for such rack a segmental ratchet, with the different teeth of which the locking-dog may engage to effect the adjustment specified.

l will explain my invention more fully by reference to the accompanying drawings, showing one of the preferred embodiments thereof, in which- Figure l indicates a side elevation showing the preferred embodiment of my invention. Fig. 2 is a plan view of the structure, with the exception that the base of the lamp is absent, as are also the portions of the handle connecting with the base.

Like parts are indicated by similar characters of reference throughout the different figures.

The lamp c may be of any suitable style.

I provide a base for the to rotate in a horiZonbe adjusted. L

ln the 'forni of the invention shown it is proj vided with a base provided with a shaft c,

j that determines the axis of rotation of the l base, this shaft desirably being journaled in l the body of the rack d, the locking element d j being substantially stationary in the embodinient of the invention shown. Fingers c, carl ried by the handle, engage the nether surface of element d, whereby the assembly of elel n; ents b and d is properly maintained. A handle f is desirably connected with the base l b by two side Vmembers g, l the main portion f, component parts of the handle. A locking element 71, in oves with the j handle and is desirably movable with respect j to the handle, for which purpose said locking l element 7L has a grip i. The locking element l, 7L moves in grooves h', provided in the ineml bers g of the handle, these grooves terminatl ing sufficiently short of the element f, so that j the hand ni ay not be pinched. The same l hand may grasp the grips f and. i at the saine j time for the purpose of operating the locking element 7L and shifting the position of the base b. The locking' element d has a series of locki ing places that are distributed around. the saine in a path concentric with the shaft c, these locking places being preferably formed by teeth upon the periphery of the element d, which eleu'ient d then constitutes a ratchet. V-hen it is desired to shift the position of l the lamp o, the grips f and are engaged by the saine hand, whereafter the grip i is moved j toward the grip f (the locking device h being l slidable longitudinally of the handle elej ments g) against the force of the spring 7c, atj tached at one end to the lamp structure and l, at the other end to the locking element 7L. 1, When the grip i is thus moved toward the @rip f, the lamp a and its base may be rol tated until the desired position of the lamp a j has been secure( whereafter the grip i may be released, the spring 7c thereupon effecting locking engagement between the locking elet ments d and h. l

While I have herein shown and particularly described the preferred embodiment of j my invention,

- I do not wish to be limited to j the precise construction shown, as changes l may readily be made therein without departing from the spirit thereof; but,

1 Having thus described my invention, l 1 claim as new and desire to secure by Letters l, Patentg `he combination with a lamp, a mounting l for the lamp permitting its bodily rotation, a

constituting, with I IOO IIO

IO carried by the handle may be separably enhandle moving With the lamp struct-ure, and gaged, the locking member carried by the a locking device for maintaining the lamp in handle being movable With respect thereto.

the position in which it is adjusted, said lock- In Witness whereof I hereunto subscribe ing device including one member carried by my name this 9th day of February7 A. D. the handle and another member substan- 906. tially stationary, the stationary locking member being in the form of a rack that is concentric with the axis of rotation of the lamp and with Which the locking member CHARLES B. BROUGHTON.

Vitnesses:

G. L. ORAGG, LEON STRoH. 

